Leetcode Problem 1775. Equal Sum Arrays With Minimum Number of Operations

1775. Equal Sum Arrays With Minimum Number of Operations

Leetcode Solutions

Greedy Approach with Counting Sort

  1. Check if it is possible to make the sums equal by comparing the minimum possible sum of the smaller array with the maximum possible sum of the larger array. If not possible, return -1.
  2. Calculate the sum of both arrays and determine the difference.
  3. Use counting sort to count the occurrences of each number from 1 to 6 in both arrays.
  4. Create an array to track the potential changes that can be made to each number in both arrays.
  5. Iterate from the largest potential change to the smallest, and for each: a. Determine the number of operations needed to cover the current part of the difference. b. Update the difference and the count of operations.
  6. If the difference becomes zero, return the count of operations. If we run out of potential changes and the difference is still not zero, return -1.
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Two Pointers with Sorting

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